Performance, blood profile and gut morphometry of broiler chickens fed diets supplemented with Yohimbe (Pausynistalia yohimbe) and Larvacide.
Veterinary and Animal Science(2020)
Abstract
The need for making livestock products free from antibiotics residue and other synthetic chemicals has resulted to the use of herbal products in livestock production. A 42-day study was conducted to compare the influence of Yohimbe (Pausynistalia yohimbe) and Larvacide on the growth performance, blood profile and gut morphometry of broiler chickens. Two hundred and twenty five 14-day old broiler chickens were randomly allotted into five treatment groups comprising of forty five chicks each. The groups were triplicates of fifteen birds. The five treatment groups consist of Basal (control), Larvacide (5 mg/Kg), three levels of Yohimbe supplementation (60 mg, 120 mg, and 180 mg/Kg) diets. Each supplement was supplied with the specified diets for the two phases of feeding [starter diet (3–4weeks) and the finisher diet (5–8weeks)]. Data collected were subjected to One-way analysis of variance. Results show insignificant effect (p>0.05) on the growth performance parameters at the starter phase. However, at the finisher phase, supplementation of Yohimbe resulted to a progressive reduction in the feed intake (p<0.05) without consequential reduction in the body weights. The chickens fed Basal diet+180 mg Yohimbe had the best Feed Conversion Ratio (FCR). Furthermore, chickens fed basal starter diet+180 mg Yohimbe had the highest (p<0.05) total protein, globulin, Red Blood Cell (RBC), White Blood Cell (WBC), and Eosinophil counts while it had the least (p<0.05) Alanine Transaminase (ALT), uric acid and creatinine. Also, chickens fed basal starter diet + 60 mg Yohimbe had the highest (p<0.05) Mean Corpuscular Volume (MCV) and Mean Corpuscular Haemoglobin (MCH) while chickens fed basal starter diet+120 mg Yohimbe had highest (p<0.05) High Density Lipoprotein (HDL), but lower Very Low Density Lipoprotein (VLDL) and triglyceride. At the finisher phase, chickens fed basal diet+180 mg Yohimbe had the highest (p<0.05) Pack Cell Volume (PCV), haemoglobin and basophils while chickens fed basal diet+60 mg Yohimbe had the highest WBC. Chickens fed basal diet+120 mg Yohimbe had the least ALT and uric acid. Triglyceride, and cholesterol, HDL and VLDL, were lowered (p<0.05) in chickens fed basal diet+Larcacide. Also, chickens fed basal diet+180 mg Yohimbe had the highest (p<0.05) villi height. The study concluded that feeding broiler chickens basal diet+180 mg Yohimbe improved optimum growth performance, blood profile and gut morphology.
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Key words
Larvacide,Pausynistalia yohimbe,Broiler chickens,Feed conversion ratio,Blood profile,Gut morphometry
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